In a gym, at the field — it doesn't matter to the Pluma. It flies equally well indoors and outdoors. One of the reasons is ProFormance™ foam — an innovative 3mm polystyrene that's strong, straight and light. Including its carbon-fiber pushrods, wire z-bends and cleverly streamlined parts, the Pluma still weighs under 10 ounces. As a result, the power-to-weight ratio is great even with small RimFire out-runner motors...all you need for jaw-dropping 3D.